CBSE Class 11 Correlation MCQs Set B

Question: Correlation between different variables is.
a) Positive
b) Negative
c) Both Positive & Negative
d) Neutral
Answer: c

Question: If the value of co-efficient of determination is 0.64, what is the value of co-efficient of correlation?
a) 0.40
b) 0.80
c) 0.08
d) 0.04
Answer: b

Question: The relationship among three or more than three variables is studied under;
a) Linear correlation
b) Simple correlation
c) Nonlinear correlation
d) Multiple correlations.
Answer: d

Question: ______ is the statistical tool that studies the degree of all the relationships.
a) Index numbers
b) Dispersion
c) Correlation
d) Range
Answer: c

Question: When two variables change in constant proportion it is known as;
a) Positive correlation
b) Negative correlation
c) Linear correlation
d) Nonlinear correlation
Answer: c

Question: Estimate the value of coefficient of correlation between x and y if the two coefficient of regression are 0.49 and 1.
a) 0.9
b) 0.7
c) 0.8
d) 1.0
Answer: b

Question: A leading MNC operating in India has decided to reduce the work force in the ratio of 15:12 and at the same time increased the workers salary in the ratio of 18:21, the total wages likely to be affected by this proposed plan will be.
a) total wages will go down in the ratio of 90:84
b) total wages will go up in the ratio of 84:90
c) total wages will go up by 5%
d) no changes in total wages will
Answer: a

Question: Which of the following techniques are used for the study of correlation?
a) Scatter diagrams
b) Karl Pearsons coefficient of correlation
c) Spearmans rank correlation
d) All of the options
Answer: d

Question: The angle between the two lines will be wider when the correlation between two variable is.
a) less
b) more
c) equal
d) very high
Answer: a

Question: Regression means.
a) act of returning back
b) method of studying correlation between two variables
c) the direction of change
d) simply average relationship
Answer: b